please do all parts listed

A company uses a periodic inventory system and reports purchases and sales data for its only product. Required: Determine the cost assigned to ending inventory and to cost of goods sold using (a) specific identification, (b) weighted average, (c) FIFO, and (d) LIFO. Enter answers in the tabs below. Determine the cost assigned to ending inventory and to cost of goods sold using specific identification. For specific identification, ending inven where 310 are from the April 30 purchase, 5 are from the April 18 purchase, and 30 are from beginning inventory